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Fair Value of Financial Instruments (Tables)

12 Months Ended

Dec. 31, 2014

Fair value and carrying value of Long-term Debt

The fair value and carrying value of our senior notes were as follows:



	December 31,
(Dollars in millions)	2014		2013
Fair value	$	6,733	$	7,580
Carrying value	6,660		6,805

- Definition

Tabular disclosure of the fair value of financial instruments, including financial assets and financial liabilities, and the measurements of those instruments, assets, and liabilities.

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